package usualclass;

public class BaoZhuang {
    public static void main(String[] args) {
        int m = 500;
        String str = "100";
        System.out.println(Integer.parseInt(str));
        Integer obj = m;
        // 手动装箱
        int n = obj; // 手动拆箱
        System.out.println("n = " + n);
        Integer obj1 = 501;
        System.out.println("obj 等价于 obj1？" + obj.equals(obj1));
    }
}
